Evidence for an early Archaean granite from Bastar craton, India

H. M. Rajesh, J. Mukhopadhyay, N. J. Beukes, J. Gutzmer, G. A. Belyanin, R. A. Armstrong

Research output: Contribution to journalArticle

57 Citations (Scopus)

Abstract

Granitoids in the early Archaean are believed to be potassium-poor tonalite-trondhjemite-granodiorite rocks. Only after continental crust attained sufficient thickness did true (relatively potassium-rich) granites form. No record of true granite prior to 3.4 Ga is available. We report a 3.6 Ga true granite from the Archaean Bastar craton in India. In contrast to the typical early Archaean granitoids, which are commonly deformed into gneisses, this granite is relatively undeformed. The age and composition of the granite implies that continental crust of the Bastar craton attained sufficient thickness to permit intracrustal melting at 3.6 Ga.

Original languageEnglish
Pages (from-to)193-196
Number of pages4
JournalJournal of the Geological Society
Volume166
Issue number2
DOIs
Publication statusPublished - Mar 1 2009

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craton
Archean
granite
continental crust
potassium
trondhjemite
tonalite
granodiorite
melting
rock

All Science Journal Classification (ASJC) codes

  • Geology

Cite this

Rajesh, H. M., Mukhopadhyay, J., Beukes, N. J., Gutzmer, J., Belyanin, G. A., & Armstrong, R. A. (2009). Evidence for an early Archaean granite from Bastar craton, India. Journal of the Geological Society, 166(2), 193-196. https://doi.org/10.1144/0016-76492008-089
Rajesh, H. M. ; Mukhopadhyay, J. ; Beukes, N. J. ; Gutzmer, J. ; Belyanin, G. A. ; Armstrong, R. A. / Evidence for an early Archaean granite from Bastar craton, India. In: Journal of the Geological Society. 2009 ; Vol. 166, No. 2. pp. 193-196.
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Rajesh, HM, Mukhopadhyay, J, Beukes, NJ, Gutzmer, J, Belyanin, GA & Armstrong, RA 2009, 'Evidence for an early Archaean granite from Bastar craton, India', Journal of the Geological Society, vol. 166, no. 2, pp. 193-196. https://doi.org/10.1144/0016-76492008-089

Evidence for an early Archaean granite from Bastar craton, India. / Rajesh, H. M.; Mukhopadhyay, J.; Beukes, N. J.; Gutzmer, J.; Belyanin, G. A.; Armstrong, R. A.

In: Journal of the Geological Society, Vol. 166, No. 2, 01.03.2009, p. 193-196.

Research output: Contribution to journalArticle

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Rajesh HM, Mukhopadhyay J, Beukes NJ, Gutzmer J, Belyanin GA, Armstrong RA. Evidence for an early Archaean granite from Bastar craton, India. Journal of the Geological Society. 2009 Mar 1;166(2):193-196. https://doi.org/10.1144/0016-76492008-089